Implemented to control air traffic volume to airports where the
projected traffic demand is expected to exceed the airport's
acceptance rate for a lengthy period of time.
Read about aces like Pappy Boyington, Butch O'Hare, Chuck
Yeager, Manfred von Richthofen (The Red Baron), Eddie Rickenbacker,
& Erich Hartmann, or about pioneering aviators like Charles
Lindbergh, Amelia Earhart, and Howard Hughes.